android 显示单选列表对话框 builder.setSingleChoiceItems

通过AlertDialog.Builder类的setSingleChoiceItems方法可以创建带单按钮的列表：方法如下： 1、从资源文件中装载数据： public Builder setSingleChoiceItems(int itemsId, int checkedItem, final OnClickListener listener) 2、从数据集中装载数据 public Builder setSingleChoiceItems(Cursor cursor, int checkedItem, String labelColumn, final OnClickListener listener) 3、从字符串数组中装载数据 public Builder setSingleChoiceItems(CharSequence[] items, int checkedItem, final OnClickListener listener) 4、从ListAdapter对象中装载数据 public Builder setSingleChoiceItems(ListAdapter adpater, int checkedItem, final OnClickListener listener)

package com.js.sinlgechoiceitemstest; import android.app.Activity;import android.app.AlertDialog;import android.content.DialogInterface;import android.os.Bundle;import android.os.Handler;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.Toast; public class SingleChoiceItemsTest extends Activity implements OnClickListener{    private String[] province = new String[] { "上海", "北京", "湖南", "湖北", "海南" };    private Button btnSingleChoiceList;    // 单击事件对象的实例    private ButtonOnClick buttonOnClick = new ButtonOnClick(1);     /** Called when the activity is first created. */    @Override    public void onCreate(Bundle savedInstanceState)    {       super.onCreate(savedInstanceState);       setContentView(R.layout.main);        btnSingleChoiceList = (Button) findViewById(R.id.btnSingleChoice);       btnSingleChoiceList.setOnClickListener(this);    }     @Override    public void onClick(View v)    {       showSingleChoiceButton();    }     // 在单选选项中显示 确定和取消按钮    //buttonOnClickg变量的数据类型是ButtonOnClick,一个单击事件类    private void showSingleChoiceButton()    {       AlertDialog.Builder builder = new AlertDialog.Builder(this);       builder.setTitle("请选择省份");       builder.setSingleChoiceItems(province, 0, buttonOnClick);       builder.setPositiveButton("确定", buttonOnClick);       builder.setNegativeButton("取消", buttonOnClick);       builder.show();    }     private class ButtonOnClick implements DialogInterface.OnClickListener    {              private int index; // 表示选项的索引        public ButtonOnClick(int index)       {           this.index = index;       }        @Override       public void onClick(DialogInterface dialog, int which)       {           // which表示单击的按钮索引，所有的选项索引都是大于0，按钮索引都是小于0的。           if (which >= 0)           {              //如果单击的是列表项，将当前列表项的索引保存在index中。              //如果想单击列表项后关闭对话框，可在此处调用dialog.cancel()              //或是用dialog.dismiss()方法。              index = which;           }           else           {              //用户单击的是【确定】按钮              if (which == DialogInterface.BUTTON_POSITIVE)              {                  //显示用户选择的是第几个列表项。                  final AlertDialog ad = new AlertDialog.Builder(                          SingleChoiceItemsTest.this).setMessage(                          "你选择的地区是：" + index + ":" + province[index]).show();                  //五秒钟后自动关闭。                  Handler hander = new Handler();                  Runnable runnable = new Runnable()                  {                      @Override                     public void run()                     {                         ad.dismiss();                     }                  };                  hander.postDelayed(runnable, 5 * 1000);              }              //用户单击的是【取消】按钮              else if (which == DialogInterface.BUTTON_NEGATIVE)              {                  Toast.makeText(SingleChoiceItemsTest.this, "你没有选择任何东西",                          Toast.LENGTH_LONG);              }           }       }    }}

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